Mort Zuckerman, U.S. NewsGaza is a tragedy in three dimensions. Innocent people die. The stalemate on a West Bank agreement hardens. World attention is diverted from the crimes of the Assad regime in Syria and Iran's progress toward a nuclear weapon. Any prospect of reversing these setbacks depends crucially on an appreciation of how we got to this dangerously untenable place.There is not the slightest shadow of a doubt who is to blame. It is Hamas, the Islamist terrorist organization beholden to its paymasters in Tehran. Hamas is dedicated by its charter to the destruction of Israel. In April 1993, it gave the…